Effect of Laser Energy Density on Amorphous Phase Content and Properties of Fe-Based Amorphous Coatings

被引:6
作者
Wu, Baolei [1 ,2 ]
Dong, Pengfei [1 ,2 ]
Yu, Weiyuan [1 ,2 ]
Hu, Chunlian [3 ]
Zhang, Fubang [3 ]
机构
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
[3] Lanzhou Technol Alloy Powder Co Ltd, Lanzhou 730050, Peoples R China
关键词
corrosion resistance; laser cladding; laser energy density; microhardness; wear resistance; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; COMPOSITE COATINGS; METALLIC-GLASS; ALLOY; MICROSTRUCTURE; PARAMETERS;
D O I
10.1007/s11666-023-01678-z
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Amorphous coatings are widely used in industry due to their excellent physical and chemical properties. In this paper, Fe-Cr-Mo-C-B-Si amorphous coating was prepared on Q235 steel by coaxial powder feeding laser cladding. The coating had a maximum thickness of 1 mm, and the influence of the laser cladding parameters on the amorphous forming ability, microstructure, microhardness and wear resistance of the cladding layers was investigated. The results show that the amorphous phase content in the cladding layer is closely related to the laser energy density, and the amorphous phase content is positively correlated with the performance of the cladding layer. With the increase in laser energy density, the amorphous phase content, microhardness and wear resistance of the cladding layer all show a tendency to decrease after the initial increase. The cladding layer prepared at an energy density of 125 J/mm2 has the best wear resistance, mainly due to fine grain strengthening and amorphous strengthening.
引用
收藏
页码:221 / 232
页数:12
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